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Finding the Fourth Proportional to 402,436.74, 603,652.95 and 102,916.83

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Solution

The fourth proportional to 402,436.74, 603,652.95 and 102,916.83 is: 154,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,436.74 : 603,652.95 = 102,916.83 : x
  2. Step 2: Convert to fraction form
    402,436.74/603,652.95 = 102,916.83/x
  3. Step 3: Cross multiply
    402,436.74x = 603,652.95 × 102,916.83
  4. Step 4: Simplify right side
    402,436.74x = 62,126,048,034.15
  5. Step 5: Solve for x
    x = 62,126,048,034.15/402,436.74
  6. Step 6: Final answer
    x = 154,374.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.